CHINT NXB-125 miniature circuit breaker is designed for AC 50Hz/60Hz low-voltage distribution circuits and provides reliable overload protection, short-circuit protection, and positive isolation for distribution boards, commercial panels, and higher-load electrical systems. The NXB-125 series supports 1P to 4P pole configurations, C / D tripping characteristics, and DIN rail installation for residential, commercial, and industrial applications requiring higher current ratings.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Series | NXB-125 |
| Type | Miniature Circuit Breaker (MCB) |
| Trip Curve | C / D |
| Rated Current | 63A, 80A, 100A, 125A |
| Pole Number | 1P / 2P / 3P / 4P |
| Rated Voltage | 240V AC (1P); 415V AC (2P / 3P / 4P) |
| Rated Frequency | 50Hz / 60Hz |
| Breaking Capacity | Icu 10kA; Ics 7.5kA |
| Protection Function | Overload protection / Short-circuit protection / Positive isolation |
| Mechanical Life | 20,000 cycles |
| Electrical Life | 6,000 cycles (In≤100A); 4,000 cycles (In>100A) |
| Rated Impulse Withstand Voltage | 4kV |
| Standard | IEC 60947-2 |
| Certification | CE |
| Application | Low-voltage distribution / Commercial panels / High-load circuit protection / DIN rail mounting |
